Thanks guys, the pond is 3/4acre. I have already added 1500lbs of agriculture lime. And it has brought my ph up some. I agree I need to bring it up some more. If I bring the ph up say to a seven, that should also bring up my total hardness. And my total Alkalinity. (Yes???) Thanks guys I wish I had found this site before I added my first batch of fish. I think my ph was way low. And killed all of them. I just got my test results back and it came back at 4.05ph prior to my lime application. I know now I should have waited before I put the fish in there, I guess what I get for being impaitient. I will make sure it is right next time.